CN103543157B - Off-line strip surface image simulation dynamic collecting method and device - Google Patents
Off-line strip surface image simulation dynamic collecting method and device Download PDFInfo
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- CN103543157B CN103543157B CN201210247850.2A CN201210247850A CN103543157B CN 103543157 B CN103543157 B CN 103543157B CN 201210247850 A CN201210247850 A CN 201210247850A CN 103543157 B CN103543157 B CN 103543157B
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Abstract
Present invention is disclosed a kind of off-line strip surface image simulation dynamic acquisition device, comprise input port, I/O interface, view data integrating apparatus, output port, Camlink output interface and storer.Input port is connected with host computer, obtains strip surface image and parameter by input port from host computer.I/O interface speed pulse signal.View data integrating apparatus is connected to input port and I/O interface, view data integrating apparatus receives band surface image and parameter from input port, from I/O interface speed pulse signal, view data integrating apparatus is integrated strip surface image according to processing speed pulse control signal and parameter and controls picking rate and the output speed of band surface image.Output port is connected to view data integrating apparatus.Camlink output interface is connected to view data integrating apparatus, and Camlink output interface comprises several basic Camlink interface and a full Camlink interface.Storer is connected to view data integrating apparatus.
Description
Technical field
The present invention relates to detection technique, particularly relate to a kind of strip surface defect Automatic Measurement Technique based on machine vision.
Background technology
Along with the development of the continuous refinement of the division of labor of the large production of socialization and the technology of machine vision, replace manual detection gradually based on machine vision strip surface defect Automatic Measurement Technique, become the mainstream applications technology of online strip surface defect detecting system.Meanwhile, because the speed of production of band improves constantly; Product Process requires that the minimum defect size detected requires to improve constantly; Requirement detects defects count, kind constantly increases; Product quality information comprehensive evaluation requires to improve constantly, and online strip surface defect Automatic Measurement Technique also needs the needs constantly developing to meet actual production.
Be important medium based on the strip surface defect automatic checkout system of machine vision with image, launch round the collection of image, transmission, process and analysis.In system debug and operational process, image information is to the strip surface picture stored or by directly gathering from camera.As Fig. 1 a and Fig. 1 b discloses the two kinds of testing processes often used in prior art.Fig. 1 a obtains realtime graphic by imageing sensor, the flow process of row relax of going forward side by side when disclosing detection system work.As shown in Figure 1a, the flow process based on scan picture is roughly as follows: by imageing sensor acquisition speed pulse signal, real-time image acquisition, examinations system image processing algorithm, export defects detection result.Fig. 1 b discloses and adopts offline image directly to test, and is used for the flow process of optimization system parameter configuration.As shown in Figure 1 b, the flow process utilizing off-line picture to carry out testing is roughly as follows: obtain offline image, examinations system image processing algorithm, carry out parameter adjustment and optimization, output defects detection result.Effectively utilize off-line picture debug and test macro be very significant thing, for minimizing reach the standard grade debug and accurate evaluation system performance have very great help.
Along with the development of hardware technology, custom-built machine vision-based detection platform based on hardware implementing real time image collection and process obtains investigation and application, this platform, by the data processing speed advantage of hardware computing resource, realizes the real-time process of image by the image processing mode of streamline.Fig. 2 discloses the one that uses in prior art based on hard-wired testing process.As shown in Figure 2, this testing process is roughly as follows: by imageing sensor acquisition speed pulse signal, real-time image acquisition, enforcement based on board Processing Algorithm, carry out parameter adjustment and optimization, output defects detection result.The flow process of Fig. 2 can only be applied to real-time online and detect, and can not be used for offline inspection.Because hardware image processing platform is direct and image sensor interface, employing offline image cannot directly to such platform test.If carried out the function of mode hardware platform by software, although easily realize and the docking of off-line image data, software pattern platform is difficult to realization, can not the actual performance of testing hardware platform well.
Summary of the invention
The present invention is intended to propose a kind of device utilizing the online surface quality of strips image acquisition of strip surface offline image dynamic similation, these view data using existing strip surface image as input, can export with certain form and interface mode by this device.Thus, the strip surface defect image with characteristic feature can be outputted to software or the hardware test platform of strip surface detection, realize the performance test as detection platform of software or hardware chart, and then the object of optimized image Processing Algorithm, parameter and whole system performance can be reached.
According to one embodiment of the invention, propose a kind of off-line strip surface image simulation dynamic acquisition device, comprise input port, I/O interface, view data integrating apparatus, output port, Camlink output interface and storer.Input port is connected with host computer, obtains strip surface image and parameter by input port from host computer.I/O interface speed pulse signal.View data integrating apparatus is connected to input port and I/O interface, view data integrating apparatus receives band surface image and parameter from input port, from I/O interface speed pulse signal, view data integrating apparatus is integrated strip surface image according to processing speed pulse control signal and parameter and controls picking rate and the output speed of band surface image.Output port is connected to view data integrating apparatus.Camlink output interface is connected to view data integrating apparatus, and Camlink output interface comprises several basic Camlink interface and a full Camlink interface.Storer is connected to view data integrating apparatus.
In one embodiment, parameter comprises width and the height of strip surface image.
In one embodiment, view data integrating apparatus comprises height arm control, width adjuster and queue buffer.Height arm control regulates the height of band surface image according to parameter.Width adjuster regulates the width of band surface image according to parameter.Queue buffer by units of will be buffer queue through height and the graphical arrangement of width adjustment.Speed control regulates image acquisition and output speed according to speed pulse signal.
In one embodiment, storer is SRAM memory and SDRAM storer, and input port and output port are all gigabit networking interfaces.
According to one embodiment of the invention, propose a kind of off-line strip surface image simulation dynamic collecting method, comprising: obtain parameter, speed pulse signal and strip surface image; Integrate strip surface image according to parameter and speed pulse signal, be stored in image buffer storage queue by the image after integrating in units of opening, speed pulse signal controls the speed of image acquisition; According to the output speed of speed pulse signal determination image; According to Selecting parameter output interface output image.
In one embodiment, parameter comprises width and the height of strip surface image.
In one embodiment, according to parameter, strip surface image is integrated to the width and height that comprise and strip surface image scaling is become setting.
In one embodiment, the output speed according to speed pulse signal determination image comprises speed pulse signal counting, exports an image when counting reaches the height of an image.
In one embodiment, comprise according to Selecting parameter Camlink interface or gigabit networking interface output image according to Selecting parameter output interface output image.
The off-line strip surface image simulation dynamic acquisition device that the present invention proposes and acquisition method make no matter to be convenient based on the off-line debug process of software or the strip surface detection system of hardware, and off-line debug process can be tested more comprehensive.Especially to based on the image acquisition of hardware handles and processing platform, device of the present invention is relied on and by input typical defect image, the algorithm of hardware processing platform and optimum configurations can carry out testing and optimizing.Device of the present invention makes the test job of whole strip surface detection system more perfect, and the utilization of this device can reach the effect of getting twice the result with half the effort.
Accompanying drawing explanation
Fig. 1 a discloses in prior art the flow process of row relax of being gone forward side by side by imageing sensor acquisition realtime graphic.
Fig. 1 b discloses in prior art and adopts offline image directly to test and carry out the flow process of optimization system parameter configuration.
Fig. 2 discloses the one that uses in prior art based on hard-wired testing process, and this flow process can only be applied to real-time online and detect, and can not be used for offline inspection.
Fig. 3 discloses the testing process using off-line strip surface image simulation dynamic acquisition device of the present invention.
Fig. 4 discloses the structural drawing of the off-line strip surface image simulation dynamic acquisition device according to one embodiment of the invention.
Fig. 5 discloses the structured flowchart of view data integrating apparatus in the off-line strip surface image simulation dynamic acquisition device according to one embodiment of the invention.
Fig. 6 discloses the process flow diagram of the off-line strip surface image simulation dynamic collecting method according to one embodiment of the invention.
Fig. 7 discloses the annexation figure of off-line strip surface image simulation dynamic acquisition device according to one embodiment of the invention and other equipment.
Embodiment
The online acquisition analogue means of the off-line band image of the present invention's design can be good at solving the problems of the prior art.Fig. 3 discloses the testing process using off-line strip surface image simulation dynamic acquisition device of the present invention.As shown in Figure 3, device of the present invention and the method realized by this device are equivalent to an intermediate link, realize the input of offline image to hardware image processing platform.As shown in Figure 3, the testing process realized in conjunction with apparatus and method of the present invention is roughly as follows: obtain offline image, the online acquisition simulation of offline image, real-time image acquisition, enforcement based on board Processing Algorithm, carry out parameter adjustment and optimization, output defects detection result.
Shown in figure 4, Fig. 4 discloses the structural drawing of the off-line strip surface image simulation dynamic acquisition device 100 according to one embodiment of the invention.As shown in Figure 4, this off-line strip surface image simulation dynamic acquisition device 100 comprises input port 102, I/O interface 104, view data integrating apparatus 106, output port 108, Camlink output interface 110 and storer 112.
Input port 102 is connected with host computer, obtains strip surface image and parameter by input port 102 from host computer.In the embodiment shown in fig. 4, input port 102 is by gigabit networking Interface realization.I/O interface 104 inbound pacing pulse signal.View data integrating apparatus 106 is connected to input port 102 and I/O interface 106, view data integrating apparatus 106 receives band surface image and parameter from input port 102, from I/O interface 104 inbound pacing pulse signal, view data integrating apparatus 106 to be integrated strip surface image according to processing speed pulse control signal and parameter and is controlled picking rate and the output speed of band surface image.Output port 108 is connected to view data integrating apparatus 106.In the embodiment shown in fig. 4, output port 108 is also by gigabit networking Interface realization.Camlink output interface 110 is connected to view data integrating apparatus 106, Camlink output interface 110 and comprises several, such as illustrated three basic Camlink interface BaseCL and full Camlink interface FullCL.Storer 112 is connected to view data integrating apparatus 106, and in the illustrated embodiment in which, storer 112 is SRAM memory and SDRAM storer.
Fig. 5 further discloses the structured flowchart of view data integrating apparatus.In one embodiment, comprised width and the height of strip surface image from the parameter that host computer receives by input port 102.View data integrating apparatus 106 comprises height arm control 160, width adjuster 161, queue buffer 162 and speed control 163.In the embodiment shown in fig. 5, also comprise pulse and divide/organize device 164 and analog encoder 165 frequently.Height arm control 160 regulates the height of band surface image according to parameter.Width adjuster 161 regulates the width of band surface image according to parameter.Queue buffer 162 by units of will be buffer queue through height and the graphical arrangement of width adjustment.Speed control 163 regulates image acquisition and output speed according to speed pulse signal.If speed pulse signal precision is higher, then the direct operating speed pulse signal of speed control 163 carries out speeds control.If the precision of the speed pulse signal provided by external encoder can not matching image picking rate, pulse is then used to divide/organize device 164 frequently to carry out frequency division or group process frequently to original rate signal, then device counts speed pulse signal, exports an image when counting reaches the height of an image.If employing analogue speed signal, then export by analog encoder 165 collection and the output speed that analogue speed signal controls image, directly realize controlling the output speed of image queue data.
Fig. 6 discloses the annexation figure of off-line strip surface image simulation dynamic acquisition device according to one embodiment of the invention and other equipment.As shown in Figure 6, this off-line strip surface image simulation dynamic collecting method 200 comprises following step:
202. obtain parameter, speed pulse signal and strip surface image.In one embodiment, this parameter comprises width and the height of strip surface image.
204. integrate strip surface image according to parameter and speed pulse signal, and be stored in image buffer storage queue by the image after integrating in units of opening, speed pulse signal controls the speed of image acquisition.In one embodiment, strip surface image is integrated to the width and height that comprise and strip surface image scaling is become setting according to parameter in step 204.
The output speed of 206. foundation speed pulse signal determination images.In one embodiment, step 206 realizes as follows: if speed pulse signal precision is higher, then directly operating speed pulse signal carries out speeds control.If the precision of the speed pulse signal provided by external encoder can not matching image picking rate, then frequency division or group process are frequently carried out to original rate signal, then to speed pulse signal counting, when counting reaches the height of an image, an image is exported.If employing analogue speed signal, then export by analog encoder collection and the output speed that analogue speed signal controls image, directly realize controlling the output speed of image queue data.
208. according to Selecting parameter output interface output image.In one embodiment, comprise according to Selecting parameter Camlink interface or gigabit networking interface output image according to Selecting parameter output interface output image in this step 208.
Introduce an embodiment of the present invention below.Fig. 7 discloses the annexation figure of off-line strip surface image simulation dynamic acquisition device of the present invention and other equipment in this example.Preserve the offline image data source of off-line strip surface image to off-line strip surface image simulation dynamic acquisition device output image data of the present invention.This offline image data source can be computing machine or data memory module.Speed encoder is to this off-line strip surface image simulation dynamic acquisition device output speed signal.Off-line strip surface image simulation dynamic acquisition device exports simulation dynamic image after treatment to detection system image processing platform.Detection system image processing platform obtains defective data and exports to detection system server, and detection system server exports defects detection result.
Off-line strip surface image simulation dynamic acquisition device of the present invention, to be stored in the image of computing machine for input, is recombinated to data in device inside, according to given picture altitude and width, carries out data output according to the output transmission speed of setting.
This device is connected with host computer by gigabit networking interface, and in this, as the data input channel that device is main, the strip surface defect image stored on computers can upload to image acquisition analogue means by this passage.Meanwhile, optimum configurations can be carried out to device by this interface.Can be accepted and processing speed pulse signal by I/O interface, or configuration device self produces speed pulse signal, this speed pulse signal is used for integrating the view data be stored in image collecting device, i.e. directly the picking rate of control simulation band view data and output speed.This device configuration gigabit networking output interface and CamLink output interface, make its output mode can be applicable to the image acquisition and processing system of network interface and CamLink interface respectively.By configuration standard communications protocol, this device energy alternate image pick-up transducers completely, utilizes the image acquisition work of offline image simulation detection system.
This device internal image Data Integration adopts FPGA circuit logic to realize, and this circuit logic inputs with the image of apparatus of the present invention, I/O control inputs is connected, and realizes reading in and processing of view data, finally view data is outputted to the output interface of device.
The process of the acquisition method performed by this device is as follows:
The first step, obtains parameter configuration and view data from host computer by input interface, and parameter configuration comprises the output speed controling parameters of the width of image and height dimension, image.
Second step, arranges view data, and according to configuration parameter, the height required for being become by image scaling and width, be stored into the view data put in order in the middle of image buffer storage queue in units of opening.
3rd step, determines the output speed of image.Image output speed can be controlled by I/O impulse speed signal or unit simulation rate signal respectively.Wherein for the speed pulse signal produced by external encoder, if its precision can not matching image picking rate, then need to carry out frequency division or group process frequently to original rate signal, then device counts speed pulse signal, exports an image when counting reaches the height of an image.When adopting analogue speed signal to control speed image, directly realize controlling the output speed of image queue data.
4th step, realizes the output of data.According to the output interface pattern that parameter configuration is selected, Camlink data are adopted to export or the output of gigabit networking data.
In the development of surface quality of strips detection system and implementation process, it is very important for carrying out offline image test.The method rely on offline image simulate online image collecting device and method, can realize offline image orderly output to surface quality of strips detection system, carry out the performance of detection system, functional test and parameter configuration.Off-line picture (being generally the strip surface image with typical defect) is stored on computing machine or other memory storages by the method, this memory storage is connected with the input port of the device that the present invention proposes, in the device proposed to the present invention by off-line picture uploading.The downstream of the device that the present invention proposes exports and is connected with the image sensor interface of detection system, can output image in detection system.Use the image acquisition speed of offline image analog image online acquisition to be that the I/O interface of the device proposed by invention is controlled, produce speed pulse signal particular by this interface or configuration and carry out synchronous images data and export and realize.Apparatus of the present invention can complete offline image and output to detection system thus, and to detection system, the apparatus and method that the present invention proposes simulate the function of online image acquisition.
The off-line strip surface image simulation dynamic acquisition device that the present invention proposes and acquisition method make no matter to be convenient based on the off-line debug process of software or the strip surface detection system of hardware, and off-line debug process can be tested more comprehensive.Especially to based on the image acquisition of hardware handles and processing platform, device of the present invention is relied on and by input typical defect image, the algorithm of hardware processing platform and optimum configurations can carry out testing and optimizing.Device of the present invention makes the test job of whole strip surface detection system more perfect, and the utilization of this device can reach the effect of getting twice the result with half the effort.
Claims (7)
1. an off-line strip surface image simulation dynamic acquisition device, is characterized in that, comprising:
Input port, input port is connected with host computer, obtains strip surface image and parameter by input port from host computer; Described parameter comprises width and the height of strip surface image;
I/O interface, I/O interface speed pulse signal;
View data integrating apparatus, be connected to input port and I/O interface, view data integrating apparatus receives band surface image and parameter from input port, from I/O interface speed pulse signal, view data integrating apparatus is integrated strip surface image according to processing speed pulse control signal and described parameter and controls picking rate and the output speed of band surface image;
Output port, is connected to view data integrating apparatus;
Camlink output interface, is connected to view data integrating apparatus, and described Camlink output interface comprises several basic Camlink interface and a full Camlink interface;
Storer, is connected to view data integrating apparatus.
2. off-line strip surface image simulation dynamic acquisition device as claimed in claim 1, it is characterized in that, described view data integrating apparatus comprises:
Height arm control, regulates the height of band surface image according to parameter;
Width adjuster, regulates the width of band surface image according to parameter;
Queue buffer, by units of will be buffer queue through height and the graphical arrangement of width adjustment;
Speed control, regulates image acquisition and output speed according to speed pulse signal.
3. off-line strip surface image simulation dynamic acquisition device as claimed in claim 1, it is characterized in that, described storer is SRAM memory and SDRAM storer, and described input port and output port are all gigabit networking interfaces.
4. an off-line strip surface image simulation dynamic collecting method, is characterized in that, comprising:
Obtain parameter, speed pulse signal and strip surface image; Described parameter comprises width and the height of strip surface image;
Integrate strip surface image according to described parameter and speed pulse signal, be stored in image buffer storage queue by the image after integrating in units of opening, speed pulse signal controls the speed of image acquisition;
According to the output speed of speed pulse signal determination image;
According to described Selecting parameter output interface output image.
5. off-line strip surface image simulation dynamic collecting method as claimed in claim 4, is characterized in that, according to described parameter, strip surface image is integrated to the width and height that comprise and strip surface image scaling is become setting.
6. off-line strip surface image simulation dynamic collecting method as claimed in claim 4, is characterized in that, the output speed according to speed pulse signal determination image comprises:
To speed pulse signal counting, when counting reaches the height of an image, export an image.
7. off-line strip surface image simulation dynamic collecting method as claimed in claim 4, is characterized in that, comprise according to described Selecting parameter Camlink interface or gigabit networking interface output image according to described Selecting parameter output interface output image.
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| CN105136804B (en) * | 2014-05-28 | 2018-11-06 | 宝山钢铁股份有限公司 | The acquisition of high-speed band steel surface image and image processing apparatus and method |
| CN111402190B (en) * | 2018-12-28 | 2023-06-09 | 上海尤图智能科技有限公司 | Image processing device and system for wire rod on-line detection |
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